Dark matter

Physics – Nuclear Physics

Scientific paper

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Scientific paper

I review the evidence for the ``missing mass'' and discusses several of the proposed candidates: baryons, neutrinos, axions and WIMPs. Baryonic dark matter, the simplest hypothesis, is not consistent with a flat universe and standard big bang light element nucleosynthesis. The non-detection of time of flight delay in the arrival time of the neutrinos from SN1987a rules out the electron neutrino as a galactic dark matter candidate. Observations of dwarf galaxy may rule out any neutrino species as a viable dark matter candidate. Baryonic dark matter, black holes, axions and WIMPs may be detected or ruled out by current and future experiments.
A.P. Sloan Foundation Fellow and NSF Presidential Young Investigator Award

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